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System and method for speech synthesis using a smoothing filter

  • US 7,277,856 B2
  • Filed: 10/31/2002
  • Issued: 10/02/2007
  • Est. Priority Date: 10/31/2001
  • Status: Active Grant
First Claim
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1. A speech synthesis system for controlling a discontinuous distortion that occurs at a transition portion between concatenated phonemes, which are speech units of synthesized speech, using a smoothing technique, comprising:

  • a discontinuous distortion processing means for predicting a discontinuity at a transition portion between concatenated samples of phonemes used for speech synthesis through a predetermined learning process, and for controlling speech synthesis so that a discontinuity at the transition portion between the concatenated phonemes of the synthesized speech is smoothed adaptively to correspond to a degree of the predicted discontinuity determined according to a result of the predetermined learning process.

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